<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>动画绑定</title>
    <style>

        div{
            width:100px;
            height:100px;
            background:red;
            position:relative;
            animation-name:myfirst;
            animation-duration:5s;
            animation-timing-function:linear;
            animation-delay:2s;
            animation-iteration-count:infinite;
            animation-direction:alternate;
            animation-play-state:running;
            /* Safari and Chrome: */
            -webkit-animation-name:myfirst;
            -webkit-animation-duration:5s;
            -webkit-animation-timing-function:linear;
            -webkit-animation-delay:2s;
            -webkit-animation-iteration-count:infinite;
            -webkit-animation-direction:alternate;
            -webkit-animation-play-state:running;
        }

        @keyframes myfirst {
            0%   {background:red; left:0px; top:0px;}
            25%  {background:yellow; left:200px; top:0px;}
            50%  {background:blue; left:200px; top:200px;}
            75%  {background:green; left:0px; top:200px;}
            100% {background:red; left:0px; top:0px;}
        }

        @-moz-keyframes myfirst {
            0%   {background:red; left:0px; top:0px;}
            25%  {background:yellow; left:200px; top:0px;}
            50%  {background:blue; left:200px; top:200px;}
            75%  {background:green; left:0px; top:200px;}
            100% {background:red; left:0px; top:0px;}
        }

        @-webkit-keyframes myfirst {
            0%   {background:red; left:0px; top:0px;}
            25%  {background:yellow; left:200px; top:0px;}
            50%  {background:blue; left:200px; top:200px;}
            75%  {background:green; left:0px; top:200px;}
            100% {background:red; left:0px; top:0px;}
        }

        @-o-keyframes myfirst {
            0%   {background:red; left:0px; top:0px;}
            25%  {background:yellow; left:200px; top:0px;}
            50%  {background:blue; left:200px; top:200px;}
            75%  {background:green; left:0px; top:200px;}
            100% {background:red; left:0px; top:0px;}
        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>